Brush



Jan. 17, 1928.

J. P. RODGERS.

BRUSH Filed June 24 Patented Jan. 17, 1928.

UNITED sTATEs PATENT OFFICE.

lJAMES P. Romans, or PITTSBURGH, PENNSYLVANIA, AssIGNoRToELLIoTT oomrANY or PITTSBURGH, PENNSYLVANIA, A CORPORATION or PENNSYLVANIA.

4 BRUSH.

'Application led June 24, 1925. Serial No. 39,307.

The present invention relatesbroadly to brushes, and more particularly 'to motor driven brushes as now used lfor awide variety of different operations. n t

5 It has heretofore been proposed to `construct brushes comprisin a central hub member having aseries o openings in the periphery thereof through each of which is thr'eaded a tuft of bristles.

l have'been found to be highly efficient and desirable, but theiruse 'and eriod of usefulness have both beenflimite `possibility of so mounting and operating the brushes as to 'efficiently use thebristles l throughout their entire length. This limitation has necessitated throwing away the brushes before their full perioda of usefulness has passed. y

The present invention has. for Aone of its vobjects the provision of a brush and mounting means therefor of such' nature that an adjustment of the brush can be madeto compensate for wear of thebristles, thereby permitting the bristles to `be used throughout substantially their entire length while maintaining an adequate support therefor.

In the accompanyin drawings there is shown, for purposes, of illustration only, a preferred embodiment of the present `inven- :40 tion, `it being understood that the drawings do not define the limits of my invention as changes in the construction and operation therein disclosed may b e made without departing either from the spirit of thel invention or the scope of my broaderclaims.

In the drawings V Figure 1 is a vertical sectional view, partly in elevation and partlybroken away, illustrating one form of brush Acortistructed, `in accordance with the present invention with an operating means therefor; t

Figure 2 is a view similar toy Figure 1 illustrating the mounting for the brush after it has been partly worn, and

Such brushes due to the imject a Figure 3 is a view similar to Figure 2` istics of the motor `do not constitute any part of the present invention, it is 'deemed -un- `necessary to describe the same in detail.

The rotating `element 7 of the motor is provided with a stud 8 *preferably threaded externally to receive a sleeve 9 having one end thereof threaded to cooperate withthe stud and its opposite end threaded to receive a fastening means 10;

The brush, while itmay beef any desired construction, is herein illustrated as bein of the type comprising a central hub mem er 11 having a series of openings 12 adjacent the periphery through each of which is threaded a tuft of bristles 13. In

rovided with a central which the fastening hub member 11 is openingV 14 lthroug vmeans `10 is adapted to pass, and the hub `member and bristles are so proportioned as to enter and be effectivelyV maintained in the desired operating position by a cup shaped support 15. It will be understoodthat the de th of the cup shaped support bears `a de nite relation to the length of the bristles 13, it being desired to have the bristles fproredetermined `distance beyond `the edge o? the support when the `fastening means 10 is in its iinalposition. Heretofore, when the effective projecting portion of the bristles have been worn `down substantially to the plane of the edge of the sup ort 15, the brush has been thrown away an a new brush utilized. In accordance with the present invention, I provide each support with a plurality "of fastening means, `the fastening means 10 being adapted to be utilized when the brush is new, and fastening means 510 adapted to be utilized when 'n Athe brush @is partly worn, and further `fas- -`tening means 10 adapted to `hold abru'sh in position after it has become worn to a brush and the bottom of the cup shaped support so that there is produced, in effect, a cup shaped support of varying effective de tlis in accordance with the len th of bristle on the brush being utilized. n Figure 1 the brush is illustrated as being a new one, and adapted to be utilized withoutany of the wear members 16. In Figure 2, however, the brush is shown as partly Vworn and as cooperating with one of the wear members. In Figure 3 the brush is illustrated as having been Worn to a considerable extent, and the cup shaped support` l5 is provided with a plurality of wear members or spacin washers 16 to thereby maintain the bristles in the desired position;

It will be understood that with a construction of the character shown, a single support may be effectively utilized throughout the entire period of usefulness` o a brush, it being onlynecessary to substitute fastening means and add wear members in i accordance with the Wear on the bristles.

While the wear member 16 may be of any expedient to utilize wearv members having a thickness approximately equal to the maximum projection ,of the bristles atany one time, but slightly less in thickness than the amount of projection,` whereby when the bristles have been worn downto such an extent that they terminate substantiallyl in the plane of the edge of the cup shaped support, the addition of a new wear member will not tend to project the bristles too far beyond the edge vof thesupport. At the same time, such a relationship makes it possible to obtain the maximum period of service from the brush with a minimum number of adjustments.k

The advantages of thepresent invention arise from the provision of a brush having supporting means adapted to cooperate with the brush in different positions, thereby enabling the brush to be usedtliroughout its full period of usefulness. I y

Iclaim: 'y j l. As an article of manufacture, a brush comprising a hub1 member, brushing elements carried thereby, a cup sliapedfsup- Y ort for `said hub member and elements, a ller adapted to be inserted into said support between the same and the hub member, and securing means terminating within the cupper portion of the support and cooperating with said support and the hub member for maintaining the hub member in position within the support, the portion of said securing means lying within the cup shaped support being below the brim of the support.

2. As an article of manufacture, a brush comprising a hub member, bristles carried thereby, a cup shaped support for said member and bristles, a plurality of wear members adaptedto be inserted into said suport between the sameA and the hub memer, and `securing means ada'atedto "pass through said hub member, sai wear members and said support and terminating within the cupped portion for maintaining theV parts in operative position, the portion of said securing means lying within the `cup shaped support being below the brim of the support.

3. As an article of manufacture, albrusli unit comprisin a hub member, a plurality of bristles carrie by the peri hery thereof, a cup shaped support for saidh means for adjustably supporting said hub within saidsup'pora and securing meansl terminating within thel cupped portion of the support and adaptedto 4hold the hub, supportand adjusting means as a rigid'brush unit, all ortionsV of said 'securing meansv lying within the cup shaped support being lso disposed that theylie below the brim of the support.

4. As an article ofmanufacture, a brush ub and bristles unit comprising ahub member, a. plurality Y of bristles carried thereby and projecting ina uniformdirection', a cup shaped support for the hubpand bristles and opening outwardly in the direction of'projection ofthe bristles, spacin means dsposedbetween the cup and the liu and securing means adapted to hold the hub, su port and spacing V'means extending outwar y and beyond the rear Wall'of the support for securing the latter to ay drivin mechanism.

In testimony w ereof I have hereunto set my hand. Y

Y yJAMES P. RODGERS.

lOO 

